<!DOCTYPE html> 
<html lang="en"> 
<head> 
<meta charset="UTF-8"> 
<meta name="viewport" content="width=device-width, initial-scale=1.0"> 
<title>示例12</title> 
<script> 
   // 解构嵌套对象 
   let person = { friends: ["Alice", {job:"CEO", age:19}] }; 
   let {friends: [name, {age, gender}]} = person; 
   console.log(name); // Alice 
   console.log(age); // 19 
   console.log(gender); // undefined 
   </script>
 </head> 
 <body></body> 
 </html> 